phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1114 The table 'phpbb_sessions' is full

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('bc5751fe62cf671a4162ab93b326c3bc', -1, 1519416830, 1519416830, '36a74b1c', -6, 0, 0)

Line : 187
File : sessions.php